Sexual Potency

Like all medications, CIALIS may have some side effects. The most common side effects with CIALIS are headache, upset stomach, back pain, and muscle aches. These side effects usually go away after a few hours. Patients who get back pain and muscle aches usually get it 12 to 24 hours after taking CIALIS. Back pain and muscle aches usually go away by themselves within 48 hours. Call your doctor or other healthcare professional if side effects continue to bother you.

As with any ED tablet, in the rare event of priapism (an erection lasting more than four hours), seek immediate medical help to avoid long-term injury.

In rare instances, men taking prescription ED tablets (including CIALIS) reported a sudden decrease or loss of vision. It’s not possible to determine if these events are related directly to the ED tablets or to other factors. If you have a sudden decrease or loss of vision, stop taking any ED tablet and call your doctor right away. Click here for more information about reports of vision problems in men taking ED medicines.